Accuracy requirements of optical linear algebra processors in adaptive optics imaging systemsA ground-based adaptive optics imaging telescope system attempts to improve image quality by detecting and correcting for atmospherically induced wavefront aberrations. The required control computations during each cycle will take a finite amount of time. Longer time delays result in larger values of residual wavefront error variance since the atmosphere continues to change during that time. Thus an optical processor may be well-suited for this task. This paper presents a study of the accuracy requirements in a general optical processor that will make it competitive with, or superior to, a conventional digital computer for the adaptive optics application. An optimization of the adaptive optics correction algorithm with respect to an optical processor's degree of accuracy is also briefly discussed.
Downie, John D. (NASA Ames Research Center Moffett Field, CA, United States)
August 16, 2013
January 1, 1990
Publication: In: Advances in Optical Information Processing 4 (SPIE Vol. 1296)